*{
margin: 0;
padding: 0;
border: 0;
}

.wrap{
    background-color: rgb(241, 238, 238);
    height: 1100px;
}

/* 导航部分 */
.daohang_left{
    float: left;
}
.daohang_mid{
    height: 56px;
    margin: 0 auto;
    width: 680px;

}
.daohang_mid li{
    text-align: center;
    list-style: none;
}
.daohang_mid li>a{
    color: black;
    font-size: 15px;
    margin-left: 23px;
    margin-right: 23px;
    height: 56px;
    line-height: 56px;
    text-decoration: none;
}
#b{
    font-weight: bold;
}
.daohang_left img{
    margin-top: 18px;
    width: 120px;
}
.daohang_right{
    float: right;
    height: 56px;
}
.daohang_right_r a{
    color: black;
    position: relative;
    top: -38px;
    text-decoration: none;
    margin-left: 10px;
}

/* 轮播部分 */
.lunbo{
    margin-top: -30px;
}
.lunbo ul{
    list-style: none;
    width: 100%;
    overflow: hidden;
}
.lunbo li{
    float: left;
    margin-left: 25px;
    position: relative;
    left: 185px;
}
.lunbo_box{
    width: 200px;
    text-align: center;
    padding: 20px 0;
}
.lunbo_box img{
    width: 200px;
    height: 180px;
    border-radius: 5px;
}

/* 内容部分 */
.neirong_dh{
    background-color: rgb(255, 254, 254);
    height: 100px;
}
.neirong_dh ul{
    list-style: none;
    width: 100%;
    overflow: hidden;
}
.neirong_dh ul li{
    text-align: center;
    line-height: 100px;
    font-size: 16px;
}
.neirong_dh ul li a{
    color: rgb(108, 108, 108);
}
.neirong_p_o{
    background-color: rgb(242, 243, 243);
    width: 100%;
    height: 500px;
}
.neirong_p_o ul{
    list-style: none;
    width: 100%;
    overflow: hidden;
}
.neirong_p_o li{
    float: left;
    width: 15%;
}
.neirong_p_o_box{
    padding: 30px 30px;
}
.neirong_p_o_box img{
    width: 200px;
    height: 180px;
    border-radius: 5px;
    margin-left: 173px;
}
.neirong_p_o_box p{
    position: relative;
    top: 10px;
    left: 190px;
}
.neirong_p_o_box span img{
    width: 25px;
    height: 25px;
}

/* 尾部部分 */
.footer{
    background: #282828;
    width: 100%;
    overflow: hidden;
    height: 229px;
    }
.content{
    width: 80%;
    margin: 0 auto;
}
.footer_top{
    width: 100%;
    height: 130px;
    border-bottom: 1px solid #333333;
    margin-left: 90px;
}
.footer_top_left{
    width: 80%;
    float: left;
    overflow: hidden;
}
.footer_top_left ul{
    list-style: none;
    width: 100%;
    float: left;    
}
.footer_top_left ul li{
    float: left;
    width: 9%;
    height: 80px;
    line-height: 130px;
}
.footer_top_left ul li a{
    font-size: 14px;
    color: #666;
}
a{
    text-decoration: none;
}
.footer_mid{
    width:1130px;
    height: 30px;
    margin-top: 20px;
    margin-left: 20px;
}
.footer_mid ul{
    width: 100%;
    float: left;
    list-style: none;
}
.footer_mid ul li{
    float: left; 
}
.footer_mid ul li a{
    font-size: 12px;
    color: #666;
    height: 30px;
    line-height: 30px;/*导航菜单垂直居中*/
    position: relative;
    left: 70px;
}
.footer_mid ul li span{
    margin: 0 20px;
}
a{
    text-decoration: none;
}
.footer_bottom{
    width:1130px;
    margin-top: 10px;
}
.footer_bottom_left ul{
    width: 80%;
    float: left;
    list-style: none;
}
.footer_bottom_left ul li{
    float: left;
}
.footer_bottom_left ul li a{
    font-size: 12px;
    color: #666;
    height: 30px;
    line-height: 30px;
    position: relative;
    left: 90px;
}
.footer_bottom_left ul li span{
    margin: 0 20px;
}
.footer_bottom_right ul{
    width: 20%;
    float:right;
    list-style: none;
    overflow: hidden;
}
.footer_bottom_right ul li{
    float:right;
}
.footer_bottom_right ul li a{
    font-size: 12px;
    color: #666;
    height: 30px;
    line-height: 30px;/*导航菜单垂直居中*/
    margin-left: -50px;
}
.footer_bottom_right ul li span{
    margin: 0 20px;
}
a{
    text-decoration: none;
}
.laypage{
    width: 100%;
    height: 40px;
    color: #666666;
    position: relative;
    left: 516px;
    display: block;
    
}
.laypage a{
    width: 40px;
    height: 40px;
    line-height: 38px;
    color: #999999;
    display: block;
    text-decoration:none;
    float: left;
    margin: 0 3px;
    text-align: center;
    
}
.laypage_curr{
    font-weight: 400;
    background-color: #ffe300;
    border-radius: 4px;
    border: 1px solid #ffe300;
    color: #333333;
}
.advlong_bottom{
    width: 100%;
    height: 100px;
    margin-top: 30px;
    text-align: center;

}
.advlong_bottom img{
    width: 1110px;
    height: 100px;
    text-align: center;

}
.pageAD{
    width: 100%;
    height: 194.8px;
    margin-top: 16px;
    margin-bottom: 30px;
}
.pageAD_wrap{
    width: 1130px;
    height: 194.8px;
    margin: 0 190px;
}
.card_box{
    width: 210px;
    height: 185px;
    float: left;
    text-align: center;
    margin-left: 15px;
    background-color: white;
}
.card_box a{
    /* text-decoration: none; */
    color: #282828;
    position: relative;
    top: 7px;
    left: -50px;
}
.card_box img{
    width: 210px;
    height: 150px;
}
.daohang{
    width: 100%;
    height: 56px;
    background: #ffe300;
}
.content{
    width: 85%;
    height: 100%;
    margin: 0 auto;
}

*{
    margin: 0;
    padding: 0;
    border: 0;
  }
  /* top部分 */
  .top{
     background: #ffffff;
     color: #323232;
     width: 100%;
     overflow: hidden;/*清除子元素对后续元素浮动的影响*/
     height: 80px;
  }
  .content{
    text-align: center;
    width: 80%;
    margin: 0 auto;
    
  }
  .top_body {
    display: block;
    list-style-type: disc;
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
    padding-inline-start: 40px;
}
.top_body li {
  list-style-type: none;
  display: inline;
  padding: 10px 30px;
  font-size: 16px;
  color: #676767;
}
.top_body .course{
  font-size: 18px;
  color: #000000;
}

/* tezhen部分 */
.tezhen{
  background-color: #f1f1f1;
  height: 2720px;
}
.neirong_box {
  float: left;
    position: relative;
    background: rgb(255, 255, 255);
    
    border-radius: 4px;
    margin: 0 20px 20px 0;
}
.neirong_box{
  width: 210px;
  height: 320px;
}
.neirong_img{
  position: relative;
  border-radius: 4px 4px 0 0;
  width: 210px;
}
.neirong_img img{
  width: 210px;
}
.neirong_info{
  border-bottom: 1px solid #eee;
    padding: 11px 16px 13px;
    height: 75px;
    position: relative;
}
.neirong_box .card_item{
  height: 50px;
  padding: 0 16px;
  display: flex;
}
.neirong_item img{
    position: relative;
    top: 10px;
    left: -70px;
}
.neirong_item p{
    margin-top: -20px;
    margin-left: 30px;
}

  /* 回到顶部 */
  .back_top{
    position: fixed;
    bottom: 50px;
    right: 30px;
    background-color: #d5d5d5;
    width: 50px;
    height: 50px;
    border-radius: 100%;
    cursor: pointer;
    line-height: 50px;
  }
  .back_top p{
    color: #000000;
    font-size: 12px;
  }